Form 355s 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering the calendar year for which you are filing. For calendar year filers, input '01-01-2016' and '12-31-2016'.
3. Fill in your Federal Identification Number (FID) and the name of your corporation in the designated fields.
4. Provide your principal business address, including city, state, and ZIP code. If your Massachusetts address differs, complete that section as well.
5. Indicate if this is an amended return or if there are any changes such as name or address updates by checking the appropriate boxes.
6. Complete the excise calculation section by entering values from relevant schedules as instructed, ensuring accuracy in taxable income and deductions.
7. Finally, sign and date the form where indicated, ensuring all information is correct before submission.

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